Question

The smallest natural number to which 1400 should be multiplied to get a perfect square number

Answer 1

$1400 = 2 \times 2 \times 2 \times 5 \times 5 \times 7$

therefore to get a perfect square no.
$1400$
should be multiplied by
$7$
and
$2$
$1400 \times 7 \times 2 = 19600$
$\sqrt{19600 = }$
$140$